DRILLING RIG Russian patent published in 2009 - IPC E21B1/00 E21B3/00 

FIELD: mining.

SUBSTANCE: invention refers to mining, particularly to drilling equipment, and can be implemented in design of rigs for drilling boreholes by rotary-percussion method in underground conditions. The drilling rig consists of a spacing-turning mechanism, of a winch, of a supply mechanism, of a front cartridge, of a back cartridge with a spindle and supplying coupling mounted therein, and of a remote control. The cartridges are equipped with hold-down plates with openings; fixing devices are assembled on the front cartridge, the devices are designed to contact a frame of the rig; also a spindle of the back cartridge is removable and is fixed with cams. The invention facilitates complete mechanisation of drilling rods unscrewing which reduces degree of danger and improves sanitary-hygienic conditions on site.

EFFECT: mechanisation of drilling rods unscrewing which reduces degree of danger and improves sanitary-hygienic conditions on site.

4 cl, 5 dwg